Knob attachment



(No Model.)

C. E. STELLER.

KNOB ATTACHMENT. No. 349,011. Patented Sept. 14, 1886.

Mei/5m y UNITED STATES PATENT EErcE.

CHARLES E. STELLER, OF MILVAUKEE, VISGONSIN.

KNos ATTACH'M ENT.

SPECIFICATION forming part of Letters Patent No. 349,011, dated September 14, 1886.

Application filed July 19, iSSG.

.To all w/wm t may concern:

Be it known that I, GHARLEs E. 'STELLER, of Milwaukee, in the county of Milwaukee and State ofVisconsin, have invented new and useful Improvements in Door-Knob Attachments; and I do hereby declare the following to be a full, clear, and'exact description of said invention, reference being had to the accompanying drawings, and to the letters or figures of reference marked thereon, which form a part of this specification.

The object of my invention is to provide a door-knob attachment that is simple in form andinexpensive of construction, that can readily be attached to doors of different thicknesses, and is adapted to be used in connection with any of the many forms of door-locks in which a spindle is used.

In the drawings, Figure l is a rear'view bf a device embodyingmy invention. Fig. 2 is a central vertical section of the samedevice at right angles to the position shown in Fig. 1. Figs. 3, 4t, 5, and 6 are details ofthe same device.

The same letters refer to like parts in all the views.

A is an escutcheon, adapted to be attached to a door by screwsthrough the apertures m m, or otherwise. The escutcheon is provided with a chambered rose, B, adapted to receive and support the shank of the knob and its bearings.

C is the shank,which terminates at its outer end in the disk l), integral therewith.

E is the shell of the knob, which is provided on the inside of its walls with two or more stops or bearings, a o. The disk I) is adapted to enter and lit into the shell E at its open side and rest against the outer ends of the stops n o, and the disk is afxed to the shell by screws p, passing through apertures in the disk and turning into screw-threaded apertures in the stops a a. The shank C is provided with an annular groove, q, which is adapted to receive the inwardly projecting ianges r r of the semicircular sleeves or boxes F F. rI he two semicircular boxes F F are adapted to iit upon and surround the inner end of the shank C, and to enter and iit in the chamber of the rose B. The inwardly-projecting flanges o' 1' are adapted to enter the groove Q,wl1ile the outsides of the ends of the Serial No. 208,429. (No model.)

boxes F F bear against the inside of the outer end wall or shoulder, s, of the rose'B,whereby the shank is kept from being withdrawn from the rose. An outwardly-projecting lug, t, on the inner cud of each ofthe boxes F is let into a recess in the inner side of the rose or escutcheon, which lug is adapted to restrain the boxes from rotating or moving around in their bearings when the shank is rotated, and this lug will also retain the shank C against its being withdrawn from the rose when the boxes F F are in position around it in therese, and may be adapted to restrain the boxes from Contact with the end wall or shoulder, s,

if desired. A

Instead of the two boxes F F, one semicircular box or one or more keys, G G', either with or without lthe lug t, as shown at G and G', respectively, may be used .to retain the shank in the escutcheon, and when one box or one or more keys are used the walls of the chamber of the rose and` escutcheon are made to t closely about the shank, as shown in Fig. 3, a sufficient recess being provided for the box or key. That part of the shank C from the groove q to the inner end is a little shorter then the boxes F F, and thereby the end of the shank is prevented from bearing against thedoor. The spindle H is a plain simple four-square or angular iron rod without screw-holes, pins, or lugs, adapted to enter the aperture in the shank .in the usual manner. This spindle not being -in-any way affixed to the shank, my knob attachment can be used with doors of any thickness.l

It will be seen that to attach the knob to a door the shank C is irst thrust into and through the rose and escutcheon up to the knob, orso far that the groove q is beyond the escutcheon. The boxes F F (or key G) are then placed on the shank with the flanges r r in the groove q. The shank C is then drawn out to position as shown in Fig. 2, and the escutcheon is affixed to the door by screws through the apertures m m. The knob being so at:- tached to the door cannot be withdrawn in any part of its rotary movement, and the shank having a close-fitting bearing in the boxes or keys, which also enter the groove in the shank, any wabbling is prevented. The

parts of the device hereinbefore described which are new and which embody my invention may not only be used with the shell-knob, as hereinbefore described, but with knobs constructed of other forms and material, and I do not wish to limit my invention in any way by the form or construction of the knob.

IVhat I claim as new, and desire to secure by Letters Patent, ifs-- 1. In doorknob attachments, a knob-shank provided with a groove about it, in combination with an eseutcheon provided with a charnbered rose having an outer wall or shoulder, s, and one or more retaining` boxes or keys, each provided with an inwardly-projecting ange, o', substantial ly as described.

2. In door-knob attachments, aknob-shank, C, provided with a groove, q, about it, in conibination with a box or key provided with an inwardly projecting flange, 1', and an outwardly -projecting lng, i, and an esoutcheon provided with a chambered rose for the reception of the box or key and a recess for the lng t, substantially as described.

In testimony whereof I allix my signature in presence of two witnesses.

CHARLES E. STELLEN.

Vitnesses:

C. Il BnNrnno'ig O. L. HorrirANN. 

